Home / 7,280.40-10,919.16-3,330.45

Finding the Fourth Proportional to 7,280.40, 10,919.16 and 3,330.45

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Solution

The fourth proportional to 7,280.40, 10,919.16 and 3,330.45 is: 4,995.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,280.40 : 10,919.16 = 3,330.45 : x
  2. Step 2: Convert to fraction form
    7,280.40/10,919.16 = 3,330.45/x
  3. Step 3: Cross multiply
    7,280.40x = 10,919.16 × 3,330.45
  4. Step 4: Simplify right side
    7,280.40x = 36,365,716.42
  5. Step 5: Solve for x
    x = 36,365,716.42/7,280.40
  6. Step 6: Final answer
    x = 4,995.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.